Chloride in Cleaning Compounds.
Abstract
Elemental analysis of candidate turbine engine compressor cleaning compounds is required to screen high levels of chloride content. A variety of wet chemical, extraction and ion specific electrode methods are available for the determination of chloride. Because of the complex formulation of the cleaning compounds, these methods require sample preparation by acid or Parr bomb digestion. The sample preparation process is tedious and time consuming, and can create interferences. A direct micro-coulometric titration method or chloride in cleaning compounds has been used successfully. This method does not require sample preparation. In this method, an electrochemical titration cell containing a silver-silver acetate electrode system responds to any substrate which can react with the silver ions. The chloride standard solution and samples in microliter quantities are pyrolysed and their oxidation products are carried to the titration cell by a carrier gas, where coulometric titration takes place. The amount of chloride present in the solutions is displayed in mg/L on the micro-coulometer.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1985
- Accession Number
- ADA173816
Entities
People
- Asha Varma
Organizations
- Naval Air Warfare Center Warminster